74results about How to "Play a shock-absorbing buffer effect" patented technology

The invention discloses a mechanical clamping device with magneto-rheological fluid shock absorption, which includes a base, the upper end of the base is fixedly connected with baffle plates symmetrically on both sides, and a circular card slot is provided on one side of the outer wall of the baffle plate , and a circular block is arranged in the circular card slot, a lead screw is connected between the two circular blocks, and the middle outer wall of the lead screw is sleeved with a rotating block, and the outer walls of both ends of the lead screw are A clamping plate is socketed, and the clamping plate is threadedly connected with the lead screw. The bottom of the clamping plate is provided with a slider, and the upper end of the base is provided with a chute corresponding to the slider. The inner wall of the baffle is a A sleeve is fixedly connected to the side, and the inner cavity of the sleeve is filled with magnetorheological fluid. The inner wall of the sleeve is provided with a piston block, and one end of the piston block is connected with a support rod. The invention is simple in structure, easy to operate, has better stability, and keeps the clamping force constant within a certain range at the same time, avoiding damage to the workpiece.

The invention discloses a suspension system, and a bogie assembly and a railway vehicle comprising the suspension system. The suspension system comprises a vehicle body connecting seat, an elastic element, a transverse vibration reducer and a vertical vibration reducer, wherein the vehicle body connecting seat is connected with the upper side of the elastic element; the transverse vibration reducer and the vertical vibration reducer are respectively hinged onto the vehicle body connecting seat and are vertical to each other; the elastic element, the transverse vibration reducer and the vertical vibration reducer can simultaneously ensure the stability of the railway vehicle in the up and down directions, left and right directions and front and back directions in the running process; in addition, the suspension system can achieve the vibration reduction buffer effects.

The invention discloses a pneumatic element shock absorption device comprising a cylinder, an upper shell and a lower shell. A piston is arranged in the cylinder. A piston rod is arranged at the bottom of the piston and extends to the top end of the outer side of the cylinder. A first spring is arranged on the portion, extending to the outer side of the cylinder, of the piston rod in a sleeving manner. A piston ring is installed at the connection position of the piston rod and the cylinder. A top plate is arranged on the top of the piston rod. An elastic plate is arranged at the bottom of thecylinder and is located on the top of the upper shell. Guide rails are arranged on the two lateral sides of the bottom of the elastic plate correspondingly. The guide rails extend upwards and penetrate the top. Annular limiting blocks are arranged on the middle portions of the guide rails correspondingly. The guide rails penetrate the annular limiting blocks. Supporting rods are perpendicularly arranged on the two lateral sides of each annular limiting block correspondingly. Installation blocks are arranged at the bottom ends of the two lateral sides of the lower shell correspondingly. An installation hole is formed in each installation block.

The invention discloses a plain trolley for logistics transportation. The plain trolley comprises a base, locking universal wheels are arranged at the bottom of the base, the middle position of the upper surface of the base is fixedly connected with a mounting block, a mounting groove is formed in the upper surface of the mounting block, an opening of the mounting groove faces upwards, a telescopic mechanism is arranged at the inner bottom of the mounting groove, and a bottom plate is connected to the telescopic mechanism; and the telescopic mechanism comprises a plurality of telescopic rods fixedly mounted at the inner bottom of the mounting groove, the ends, away from the base, of the multiple telescopic rods are all fixedly connected with the bottom of the bottom plate, and a spring isarranged on each telescopic rod in a sleeving mode. According to the plain trolley for logistics transportation, the effects of limiting and disengaging prevention on cargos stacked on the bottom plate can be achieved through a surround formed by the mounting groove formed in the mounting block and two limiting blocking discs, accidental falling-off and rollover of the cargos are avoided when thetrolley passes through a jolting road section, and integrity in the cargo transporting process is ensured.

The invention relates to the field of unmanned aerial vehicles and discloses a buffering device used for landing of an unmanned aerial vehicle and the unmanned aerial vehicle provided with the buffering device. The buffering device used for landing of the unmanned aerial vehicle comprises an upper shell used for being fixedly connected with the bottom of an unmanned aerial vehicle body, a lower shell fixed to the lower portion of the upper shell, a power component and a buffering component which are fixedly arranged relative to the lower shell. When the unmanned aerial vehicle lands, the powercomponent depends on upstream airflow with the motion direction opposite to that of the unmanned aerial vehicle to supply power so as to drive the buffering component to enter in a buffering state. When the unmanned aerial vehicle lands, the upstream airflow can supply power to the power component, the power component can drive the buffering component to enter in the buffering state through the power, so that impact on the vehicle body in the landing process is reduced, and the vehicle body is protected.

The invention discloses a turnable interaction assembly for AR interactive teaching equipment. The turnable interaction assembly comprises a moving mechanism, a damping mechanism, a rotating mechanism, a lifting mechanism and a mounting plate, wherein the damping mechanism is arranged on the top surface of the moving mechanism, and the rotating mechanism is arranged on the top surface of the damping mechanism; and the lifting mechanism is arranged on the top surface of the rotating mechanism, and the mounting plate is arranged on one side of the lifting mechanism. According to the turnable interaction assembly for the AR interactive teaching equipment, through the moving mechanism, a teacher can conveniently operate and move the equipment, the damping mechanism can reduce the influence ofexternal vibration on the equipment, and meanwhile, the rotating mechanism and the lifting mechanism are matched with each other so that the AR interactive teaching equipment can be turned over, the use height of the AR interactive teaching equipment can be flexibly adjusted, and then the use flexibility of the AR interactive teaching equipment is improved.

The invention discloses a new wine bottle cleaning device. The new wine bottle cleaning device comprises a base; two first supporting blocks parallel to each other and supporting legs are arranged atthe upper end of the base; an operation table is fixed to the two first supporting blocks parallel to each other and the supporting legs jointly; a first driving device is fixed to one side of one first supporting block; the tail end of an output shaft of the first driving device penetrates the first supporting block and extends to one side of the first supporting block; the tail end of the outputshaft of the first driving device is connected with a screw rod; a movable block is arranged on the screw rod in a penetrating manner, and is provided with a first threaded through hole; one end of the screw rod penetrates the first threaded through hole, and is rotationally connected to one side of the other first supporting block; and the operation table is provided with a sliding groove. The new wine bottle cleaning device is advanced in deign, easy to operate, automatic and integrated, the production efficiency is high, cleaning is thorough, human power resources are saved, the using range is also wide, very good economic benefits are achieved, and the new wine bottle cleaning device is suitable for popularization.

The invention discloses a small track probing robot with damping vibration absorbing wheels. According to the small track probing robot, the service life can be prolonged, the noise in movement is reduced and the operation is stable; moreover, necessary high automotive performance for the small track probing robot is provided, and the strong vibration and impact produced by performing high-speed cross-country mobility in complex and rugged environment or when walking up and down the stairs can be greatly reduced. The damping absorbing wheels are arranged in rows between the two sides of a robot body and a track, so that the vibration absorbing and buffering effects can be achieved, and the damping vibration absorbing wheels can serve as bearing wheels of the small probing robot; moreover, the track of the robot is able to adopt to the rough grounds, and the movement performance of the robot is effectively improved.

The invention discloses an unmanned aerial vehicle with a damping device, and belongs to the technical field of unmanned aerial vehicles. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, a damping mechanism is arranged in the unmanned aerial vehicle body, the damping mechanism comprises a box body and an equipment plate, the box body is fixedly mounted at the inner bottom of the unmanned aerial vehicle body, an air pump is fixedly mounted in the box body, eight air guide pipes penetrate through the side walls of the periphery of the box body, and a push rod is slidably connected into each air guide pipes in a sleeved mode; and a slideway is fixedly installed at the bottom of the unmanned aerial vehicle near the push rod, a first sliding block is installed in the slideway, a first spring is fixedly mounted between one end of the first sliding block and the side wall of the unmanned aerial vehicle body, a vertical rod is fixedly mounted at the top of the first sliding block, a second spring is fixedly mounted at the top end of the vertical rod, a vibration sensor is fixedly mounted at the bottom of the equipment plate, and the air pump is electrically connected with a controller. The problem that in the prior art, electronic equipment on an unmanned aerial vehicle is prone to being damaged due to impact vibration and cannot work normally is solved, operation is easy and convenient, and practicability is high.

The invention discloses a goods delivery unmanned aerial vehicle with a rainproof function. The goods delivery unmanned aerial vehicle with the rainproof function comprises an unmanned aerial vehiclebody; fixing frames are all arranged on the surrounding side surfaces and the bottom surface of the unmanned aerial vehicle body; rotating rods are arranged on the fixing frames; rain shielding fabrics are arranged on the rotating rods in a curled manner; second adsorption magnetic strips are arranged at the head ends of the rain shielding fabrics; connecting fabrics are arranged on the two sidesof the rain shielding fabrics; a hydraulic telescopic rod is arranged at the central position of the bottom end of the unmanned aerial vehicle body; a fixing plate is arranged at the lower end of thehydraulic telescopic rod; a press plate is arranged in the lower end of the fixing plate; stands are arranged around the bottom end of the unmanned aerial vehicle body; stand rods are arranged betweenthe stands; clamping plates are arranged on the stand rods; bottom rods are arranged at the bottom ends of the stands; rubber rods are arranged at the lower ends of the bottom rods; arms are mountedon the two sides of the unmanned aerial vehicle body; and propellers are arranged at the tail ends of the arms. According to the goods delivery unmanned aerial vehicle with the rainproof function, thegoods delivery unmanned aerial vehicle has a rainproof function so as to guarantee that goods cannot be wet by rain when being delivered in rainy days; and as the goods delivery unmanned aerial vehicle lands in a stable manner and the shaking force is small, sufficient protection is provided for goods delivery.

The invention discloses a baby stroller with high buffering protection performance and a working method thereof, and relates to the field of baby strollers, the baby stroller comprises a baby crib, a hand push rod, a sunshade rod, a sunshade curtain, a damping box, a mounting frame, a buffering front wheel assembly, a damping rear wheel assembly, a storage box and a protection assembly; according to the baby stroller, most of vibration generated in the running process of the baby stroller is counteracted through a third buffer spring and a fourth buffer spring, the stability of the whole stroller body of the baby stroller is guaranteed, the vibration generated in the running process of the baby stroller can be further weakened through a damping assembly, and therefore the effects of high buffering and strong shock resistance are achieved; according to the baby stroller, the stability of the baby crib is guaranteed, the angle of the turnover plate is adjusted through the protection assembly, so that the supporting seat can provide support when the baby stroller tends to turn over on one side, the probability of turning over on one side of the baby stroller is further reduced, injuries caused by falling over of a baby are avoided, and the baby stroller is high in safety and good in protection performance.

The invention provides a buffer and shock absorption packing device of a washing machine, which comprises a lower shock pad installed in the bottom of the washing machine. The washing machine comprises a box and a lower reinforcer fixedly connected in the bottom of the box. The lower shock pad is provided with a first buffer and shock absorption part and a second buffer and shock absorption part, wherein the first buffer and shock absorption part is arranged corresponding to the connecting part of the lower reinforcer and the box and supports the connecting part, the second buffer and shock absorption part is arranged corresponding to the lower reinforcer, and a buffer interval used for secondary buffer is arranged between the second buffer and shock absorption part and the lower reinforcer. According to the buffer and shock absorption packing device of the washing machine, the first buffer and shock absorption part is supported in a position with the strongest intensity in the bottom of the washing machine, which has better supporting stability, and achieves primary buffer and shock absorption effect. And the second buffer and shock absorption part can further achieve secondary buffer and shock absorption effect, therefore, the buffer and shock absorption packing device can conduct buffer and shock absorption support towards the box of the washing machine comprehensively and effectively, reduces the chances of box deformation during the processes of loading and unloading or transportation, and reduces financial loss.

The invention relates to a shock absorbing and buffering device for a leaf spring suspension, comprising a frame and a leaf spring, one end of the leaf spring is connected to the frame, a shock absorbing and buffering device is arranged on the frame, and an elastic cantilever is arranged under the shock absorbing and buffering device The beam, the front end of the elastic cantilever beam and the leaf spring form a corresponding suspension relationship; the front end of the elastic cantilever beam and the leaf spring form a corresponding suspension with a rubber buffer block; when the leaf spring is excessively deformed or subjected to upward impact, the leaf spring will first The rubber buffer blocks on the elastic cantilever beam are in contact; when the leaf spring continues to move upward, the elastic cantilever beam is squeezed by the leaf spring, deforms, and transmits the force to the coil spring; the coil spring is deformed by force and absorbs the kinetic energy of the leaf spring , converted into its own potential energy, so as to ease the impact of the leaf spring, play the effect of shock absorption and buffering and protect the rubber stopper.

The invention discloses a wind generating set transmission system with the damping function. The wind generating set transmission system comprises an impeller and a main shaft. The front end of the main shaft stretches into the hub of the impeller. The hub of the impeller is internally provided with an annular elastic damping disc with which the main shaft is sleeved. A groove surrounding a disc plane by one circle and provided with the U-shaped cross section is formed in the middle of the disc plane of the elastic damping disc in the axial direction in an inward-concave mode, the inner circumference of the elastic damping disc is provided with an inner assembling end face turned outwards, the outer circumference of the elastic damping disc is provided with an outer assembling end face turned outwards, the main shaft is provided with a protruding ring, the outer surface of the inner assembling end face is closely attached to the inner side face of the protruding ring, the outer surface of the inner assembling end face is connected with the inner side face of the protruding ring, the inner surface of the outer assembling end face is closely attached to the outer end face of the hub of the impeller, the inner surface of the outer assembling end face is connected with the outer end face of the hub of the impeller, and the groove of the elastic damping disc is internally provided with a rubber damping body. The wind generating set transmission system has the advantages that the elastic damping disc deforms to play a role in damping and buffering, reduces loads on the transmission system, reduces the loads borne by a main shaft bearing and enables transmission to be more stable.

The invention discloses safety protection type anti-seismic and noise-reducing electromechanical engineering equipment for building construction. The equipment comprises a box body; the box body is composed of sound insulation plates; a damping device is arranged at the bottom of the box body and comprises a first supporting plate; the bottom of the first supporting plate is fixedly connected with a damping rod; the bottom of the damping rod is fixedly connected with a second supporting plate; the second supporting plate is slidably connected with the side wall of a supporting base; the bottom of the second supporting plate is slidably connected with two sliding blocks; one sides of the two sliding blocks are fixedly connected with tooth blocks; tooth grooves meshed with the tooth blocks are formed in the inner wall of the supporting base; the two sliding blocks are connected through a fourth spring; and the bottoms of the sliding blocks are slidably connected with baffles. When the box body vibrates, the damping rods enable the second supporting plate to move downwards, when the tooth blocks and the tooth grooves are staggered, the two sliding blocks can move in the opposite directions to compress the fourth spring, so that vibration is well relieved in the process; and the baffles compress a damping spring, so that a good damping and buffering effect can be achieved.

The invention belongs to the field of agricultural irrigation, and particularly relates to a pesticide box capable of preventing pesticide liquid from pouring for an agricultural plant protection unmanned aerial vehicle. For solving the problems that existing peptide boxes are likely to collide with each other, the protective performance is poor, the spraying operation of the unmanned aerial vehicle is affected, and when the unmanned aerial vehicle lands, intensive impact force can be generated, and the stability of the pesticide box is affected, the pesticide box comprises the unmanned aerial vehicle, two installing supports are fixedly connected to the lower end of the unmanned aerial vehicle, the two installing supports are symmetrically arranged, the pesticide box is arranged between the two installing supports, the side walls of the two ends of the pesticide box are each fixedly connected with a fixing plate, and a limiting mechanism is arranged between each of the two fixing plates and the corresponding installing support. The protective performance of the pesticide box of the unmanned aerial vehicle can be improved, the pesticide box can be effectively protected, the probability that the pesticide box is damaged is avoided, during landing, the damping buffering effect can be achieved, and the influence caused by acting force generated by landing to the pesticide box is reduced.

The invention provides a switch cabinet safety protection mechanism and a switch cabinet, the switch cabinet safety protection mechanism comprises a back shore substrate, two sides of the back shore substrate are fixedly provided with at least one pair of side rods abutting against the side wall of a switch cabinet body, the inner sides of the side rods are fixedly provided with longitudinal slide blocks slidably connected in the switch cabinet body, and the longitudinal slide grooves are internally provided with compression springs; connecting holes are formed in the bottom ends of the side rods, a group of cross rods are connected in the two groups of side rod connecting holes in a penetrating manner, and the cross rods stretch across and abut against the bottom side of the switch cabinet body; a group of guide columns penetrate through the center of the back shore base plate, a group of hanging rings are fixed at the top ends of the guide columns, a shielding shed used for shielding the upper portion of the switch cabinet body is fixed on the outer side of the guide columns, a connecting disc is fixed at the bottom ends of the guide columns, a plurality of groups of connecting rods are evenly hinged to the periphery of the connecting disc, and a group of sliding blocks are hinged to the ends of each group of connecting rods; the device is simple in structure, has a detachable mounting effect, is convenient to disassemble, assemble and maintain, can adapt to suspension transportation, and ensures higher transportation stability and safety.

The invention relates to the technical field of decelerators, in particular to a lifting-type decelerator. The lifting-type decelerator comprises a decelerator body, a lifting seat, a fixing seat anda lifting assembly; the fixing seat is mounted on the lifting seat, and a fixing groove used for mounting the decelerator body is formed in the fixing seat; a first damping body is arranged on the inner wall of the fixing groove, a plurality of fixing pieces used for fixing the decelerator body are arranged on the fixing seat in a row, and the fixing pieces and the fixing seat are detachably connected; the lifting assembly comprises a bottom plate and a lifting driving piece which is used for driving the lifting seat to move up and down; and guiding rods are arranged on the two sides of the bottom plate and movably arranged in the lifting seat in a penetrating mode. The lifting-type decelerator is novel in structure and ingenious in design, the up-down position of the decelerator body is controlled to be adjusted, and using is convenient and reliable; vibration and noise generated during working of the decelerator body are reduced; and the decelerator body is prevented from being loosened, stability is good, and reliability is high.

The invention discloses an unmanned aerial vehicle (UAV) and a UAV stable landing buffer device. The UAV stable landing buffer device comprises a shell, a first wind impeller, four wind impeller boxes, thread bushings, threaded rods, connecting plates and four buffer feet, wherein an air inlet is formed in the bottom of the shell, a main air duct is arranged on the air inlet, four secondary air ducts extending to the periphery are arranged on the main air duct in a communicating way, and the tail sections of the secondary air ducts vertically extend downwards; the first wind impeller is transversely arranged at the air inlet and is driven to rotate by means of airflow; the four wind impeller boxes are respectively and correspondingly fixed at the tail sections of the four secondary air ducts, and are positioned at the upper part positions in the tail sections; the thread bushings are fixed in the centers of second wind impellers in the wind impeller boxes; the thread bushings sleeve the threaded rods in a threaded way and are matched with the threaded rods by means of threads; the connecting plates are connected with the bottom ends of the threaded rods; the four buffer feet respectively correspond to the connecting plates and are fixed at the lower parts of connecting parts. When the UAV lands, a driving force can be generated by means of the upstream airflow, and the buffer feet are then pushed out by driving the threaded rods to move, so that the device is enabled to enter a buffer state.

The invention discloses a protective transformer convenient for cooling and heat dissipation, and belongs to the technical field of transformers, the protective transformer specifically comprises a protective box, a transformer and a refrigeration compressor, a base is arranged at the bottom of the protective box, the transformer is mounted in the protective box, anti-collision plates are arranged on the two sides of the protective box, and an air inlet groove is formed in the bottom of the protective box; an air inlet groove is formed in the top of the protection box, an air outlet groove is formed in the top of the protection box, mounting plates are arranged in the air inlet groove and the air outlet groove, cooling fans are arranged on the mounting plates, and circulating pipes are arranged in the air inlet groove and the air outlet groove and connected with a refrigeration compressor; according to the transformer protection device, the effect of blocking dust and rainwater is achieved through the protection box, the service life of the transformer is prolonged, the effect of damping and buffering is achieved on the protection box through an anti-collision plate and a buffering mechanism, the transformer is prevented from being damaged when the protection box collides, and under cooperation of a cooling fan, a traction assembly, a circulating pipe and a refrigeration compressor, the cooling effect of the transformer is improved. And the heat dissipation efficiency of the transformer is improved.

The invention discloses an intelligent wardrobe based on the Internet of Things. The intelligent wardrobe comprises a bottom shell, wherein the upper end of the bottom shell is fixedly connected with a wardrobe body, the lower end of the wardrobe body is provided with a pushing mechanism, the lower end of the pushing mechanism is provided with a buffer part, the bottom of the inner side of the wardrobe body is provided with an insect prevention mechanism, a heating mechanism is arranged on the inner side of the cabinet body, a wheel moving mechanism is arranged on the inner side of the cabinet body, a convenient-to-install mechanism is arranged on the left side of the front face of the cabinet body, the left side of the front face of the cabinet body is movably connected with a host through the convenient-to-install mechanism, a single chip microcomputer is arranged on the inner side of the host, and a sliding door is arranged on the front face of the cabinet body. According to the wardrobe, a wireless network unit is arranged on the single-chip microcomputer, the single-chip microcomputer can be connected with an APP client of a handheld device of a user by accessing WIFI, the user can remotely control various functions of the wardrobe, and therefore, user experience can be improved.

The invention relates to the technical field of drainage shoes, in particular to a pair of shoes with a drainage function. Each shoe comprises a shoe sole and a shoe body, wherein the shoe body is sewed on the upper surface of the shoe sole; a plurality of air holes are uniformly formed in the outer surface of the shoe body; a sheath is sewed at the bottom of one side of the outer surface of the shoe body, and the sheath is sewed on one side of the upper surface of the shoe sole; the shoe sole comprises a first substrate and a second substrate; the second substrate is positioned right below the first substrate; a protection layer is adhered to the upper surface of the first substrate; a plurality of drainage blocks are uniformly adhered to the lower surface of the second substrate; connection layers are adhered to the inner surfaces of the first substrate and the second substrate respectively; a buffer layer is adhered between the two connection layers; and the upper surface and the lower surface of the buffer layer are adhered to the inner surfaces of the two connection layers respectively. The shoes with the drainage function have the advantages that the drainage effect is good,the water on the shoe sole can be quickly discharged to the outside, the function of relatively high buffering performance and sterilization and deodorization is achieved, and meanwhile, the structureconnection of the shoe sole is relatively stable and reliable.

The invention discloses a telegraph pole-based communication cable fixing device, and relates to the technical field of communication cables. The device comprises a base, the base is fixedly connectedto a telegraph pole through a fixing piece, and the base comprises a first connecting plate and a second connecting plate which are fixedly connected with each other. A plurality of fixing assembliesfor communication cables are fixedly connected to the second connecting plate along the length direction of the second connecting plate, each fixing assembly comprises a chassis, and a rotary disc isrotatably connected to the upper portion of each chassis. A pair of winding pipes are symmetrically and fixedly connected to each rotary disc, a pair of arc-shaped sliding grooves are symmetrically formed in the upper surface of the base plate, and a sliding block is slidably connected into each sliding groove. The upper end of each sliding block is fixedly connected with the lower surface of therotary disc, and a spring is fixedly connected between each sliding block and one end of the corresponding sliding groove. When the cable shakes, the rotary disc rotates along with the cable, the length of the cable is increased, the spring applies elastic force to the sliding block, so that the tension of the cable is reduced, and the cable can be kept in a tightened state.

The invention provides an air quality detection system based on Internet of Vehicles, which comprises a protective outer box, first sliding grooves are formed in two ends of the inner side wall of the protective outer box, screw rods are mounted at upper and lower ends of the inner side walls of the first sliding grooves, first sliding blocks are in threaded connection with the outer side walls of the screw rods, and first threaded holes are formed in the inner sides of the first sliding blocks; a buffering mechanism is welded to the outer side wall of ta he sliding rod, a detector is installed on the outer side wall of a buffering mechanism, a dustproof mechanism is arranged on the inner side wall of a detector, and one end of the outer side walls of the screw rods are in threaded connection with a driving mechanism. Through the arrangement of the driving mechanism, the buffering mechanism, the first sliding blocks, the first sliding groove, the first threaded hole and the screw rods, the detector can be damped and buffered in the vehicle running process, so that the detector is protected, and damage is prevented.

The invention discloses an electronic commerce information statistics device based on big data calculation, and a use method, and belongs to the technical field of electronic commerce. The problems that in the prior art, information statistics equipment is large in size, difficult to carry and move, prone to overheating after being used for a long time and lack of protection measures are solved. The electronic commerce information statistics device based on the big data calculation comprises a bottom plate, universal wheels, supporting rods, a fixed frame, a fixed plate, an information statistics computer, a protection cover, an air bin, a fan, an air guide pipe, a location rod, a location pipe, a movable rod, a movable plate and a top cover, wherein the bottom surface of the bottom plateis fixedly connected with the plurality of universal wheels; the top surface of the bottom plate is fixedly connected with the plurality of supporting rods; the top ends of the supporting rods are fixedly connected with the fixed frame; the inner wall of the fixed frame is fixedly connected with the fixed plate; an information statistics computer is fixedly installed at the top of the fixed plate;the bottom of the fixed plate is fixedly connected with the air bin; and the fan is arranged in the air bin. The electronic commerce information statistics device based on the big data calculation ismainly used for electronic commerce information statistics.

The invention discloses a vibration table for spheroidal graphite cast iron casting molding and belongs to the field of spheroidal graphite cast iron. The vibration table comprises a bottom plate, wherein a plurality of second guide columns are mounted in the middle of the upper part of the bottom plate, third springs are mounted outside the second guide columns, a second shock absorbing plate isfixedly connected above the third springs, a plurality of first guide columns are fixedly connected above the second shock absorbing plate, second springs are mounted outside the first guide columns,a first shock absorbing plate is fixedly connected above the second springs, a casting box is fixedly connected above the first shock absorbing plate, a collecting box is mounted outside the casting box, and a plurality of hole plugs are mounted at the bottom of the collecting box. By arranging the second and third shock absorbing springs, a shock-absorbing and buffering role is played when a pressing plate extrudes resin sand in the casting box, so that the vibration table is good in shock absorption and is unlikely to damage equipment. The vibration table is simple in structure, good in shock absorbing effect and high in practicality and is worth being applied and popularized.

The invention discloses an idler wheel device. The idler wheel device comprises a mounting shaft, a mounting frame, a supporting wheel and a locking structure; a positioning assembly is mounted at thejunction of the mounting shaft and the supporting frame, and the positioning assembly comprises a fixing block fixedly mounted in the supporting frame, a directional sliding block, and an universal sliding block mounted between the directional sliding block and the lower surface of the top end of the supporting frame, wherein the directional sliding block is connected with the fixing block through a compression spring and arranged on the upper part of the fixing block; steel balls are mounted between the universal sliding block and the lower surface of the top end of the supporting frame, andthe universal sliding block is fixedly connected with the mounting shaft; and a protruding part and a groove which are mutually matched are formed between the directional sliding block and the universal sliding block, and after the protruding part and the groove are matched, the directional sliding block and the universal sliding block are circumferentially fixed. According to the idler wheel device, a vehicle body can be automatically adjusted to be in directional advancing or universal advancing through outside damping force, using is more convenient, meanwhile, the height of the vehicle body can further be adjusted, and the damping and buffering effects can be achieved.